PI64857: AFTER SOME MAINTENANCE WERE APPLIED, IMS ABENDED WITH ABEND0C4 IN MODULE DFSRMC10 NEAR LABEL INITLLBS DU 16/06/28 PTF PECHANGE

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• After some maintenance were applied and during IMS restart
  (AUTO=Y ), " DFS3563I CNT  NAME ........ NOT FOUND" appeared
  followed by IMS abended.
  Analysis from the dump indicated that ABEND0C4 issued in
  DFSRMC10 at offset x'1EC' near label INITLLBS. The abend
  occurred because when we tried to load REMOTE CMND LLB into
  Reg3. Reg3 address pointed to @7FFFF000 which is an invalid
  address.
  Initially we loaded Reg3 the MSCDIMLNB (System LNB) from
  Reg6+130 (Reg6 @SCDMSCD).  Then we loaded Reg3+28 the CTB
  address (LTB) which is zeroes.  Then into Reg3+4 which now
  holds the address @7FFFF000 which is invalid address.
  Further investigation shows that apar PI56254 and its ptfs
  UI37954 / UI37955 caused the abend.
  

Local fix

• Exclude apar PI56254 and its ptfs  UI37954 / UI37955.
  

Problem summary

• ****************************************************************
  * USERS AFFECTED:                                              *
  * All IMS V14 users who already applied                        *
  * PI56254 and PTFs UI37954/UI37955.                            *
  ****************************************************************
  * PROBLEM DESCRIPTION:                                         *
  * Abend0C4 in subroutine INITLLBS of                           *
  * DFSRMC10 due to invalid MSCDIMLNB                            *
  * address.                                                     *
  ****************************************************************
  * RECOMMENDATION:                                              *
  * INSTALL CORRECTIVE SERVICE FOR APAR/PTF                      *
  ****************************************************************
  The failing scenario is as follows:
  1. In a normal IMS restart, DFSCRPB0 processed the
  4036 records the logical links.
  2. In DFSCRPB0, the label CRP9LCBS was inserted
  incorrectly into the middle of the 4037 logic.
  3. This caused the control blocks MSCL for the
  logical link not being initialized properly.
  4. The INITBLKS routine in DFSRMC00 failed to find
  the associated MSNAME due to a bad CTBPRSTN field,
  and issued DFS3563I CNT  NAME ........ NOT FOUND.
  INITBLKS skipped initializing the MSCDIMLNB field.
  5. The INITLLBS routine used the invalid MSCDIMLNB
  field which led to the abend0C4.
  

Problem conclusion

• DFSCRPB0, DFSCRPD0, and DFSICL60 are changed to
  correct the sequence insertion.
  

Temporary fix

Comments

APAR Information

• APAR is sysrouted FROM one or more of the following:

• APAR is sysrouted TO one or more of the following:

  UI39376 UI39377

Modules/Macros

• DFSCRPD0 DFSCRPB0 DFSICL60
  

Fix information

• Fixed component name

  IMS V14

• Fixed component ID

  5635A0500

Applicable component levels

• R400 PSY UI39376

     UP16/07/16 P F607 ­

• R402 PSY UI39377

     UP16/07/16 P F607 ­

Fix is available

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